83-88 SS Stock Specs

Engine 305H.O. (1983-1988 stock motor)(L69) Displacement: 305 cubic inches (5.0L) Horsepower: 180@4800 RPM Torque: 225@3200 RPM MAX RPM: 5500 Idle: 650 RPM Compression Ratio: 9.5:1 Bore&Stroke: 3.74" x 3.48" Heads: Cast Iron, 58cc Head Specs: 1.84"/1.5" Camshaft: Hydraulic flat tappet

Transmission 83-84 TH-350 (no overdrive) 85-88 TH-200-4R (w/ overdrive)

Rear end gear ratios 83-84 3.42 (no posi option) 85-88 3.73 (w/ posi option)(G80)